21222332313131 has 2 divisors, whose sum is σ = 21222332313132. Its totient is φ = 21222332313130.

The previous prime is 21222332313101. The next prime is 21222332313173. The reversal of 21222332313131 is 13131323322212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222332313131 - 2¹⁴ = 21222332296747 is a prime.

It is a super-2 number, since 2×21222332313131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21222332313094 and 21222332313103.

It is not a weakly prime, because it can be changed into another prime (21222332313101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611166156565 + 10611166156566.

It is an arithmetic number, because the mean of its divisors is an integer number (10611166156566).

Almost surely, 2^{21222332313131} is an apocalyptic number.

21222332313131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222332313131 is an equidigital number, since it uses as much as digits as its factorization.

21222332313131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

Adding to 21222332313131 its reverse (13131323322212), we get a palindrome (34353655635343).

The spelling of 21222332313131 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred thirty-two million, three hundred thirteen thousand, one hundred thirty-one".